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  • Visual Studio 2008 “Format Document/Selection” command and a function named “assert” in JavaScript c

    - by AGS777
    Just have found some funny behavior of the Visual Studio 2008 editor.  Sorry if it is already well known bug. If you happened to have a JavaScript function named “assert” in your code (and there is pretty high likelihood in my opinion), for example something like: function assert(x, message) { if (x) console.log(message); } then when either Format Document (Ctrl + K, Ctrl + D) or Format Selection (Ctrl + K, Ctrl + F) command is applied to the document/block containing the function, the result of the formatting will be: functionassert(x, message) { if (x) console.log(message); } That’s it. function and assert are now joined into one solid word. So be aware of the fact in case you suddenly start receiving  strange exception in your JavaScript code: missing ; before statement functionassert(x, message) And no, it is not an April Fool's joke. Just try for yourself.

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  • Web Deployment Made Awesome: If You're Using XCopy, You're Doing It Wrong

    - by The Official Microsoft IIS Site
    I did three talks at Mix 10 this year, and I'm going to do blog posts for each one, sharing what I talked about and some code if it's useful. I did a talk on Deployment called " Web Deployment Made Awesome: If You're Using XCopy, You're Doing It Wrong ." You can download the talk here, or watch it online : VIDEO Download: MP4 Video , Windows Media Video , Windows Media Video (High) I always try to sneak cooler titles into conferences if I can. It's better than "...(read more)

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  • Can&rsquo;t install Transport HUB in Exchange 2010

    - by Kelly Jones
    When building my latest SharePoint 2010 demo virtual machines, I decided to try installing Exchange 2010 as well.  Now, I’m not an Exchange admin, but I thought “how hard can this be?”  Well, a little more than I thought. Pretty early during the install, I got an error saying that it couldn’t “install Transport HUB”.  I double checked that my VM was meeting all of the requirements, both hardware and software, and everything looked fine. After much researching, it turns out that the error was caused by not having IPv6 enabled on the network adapter inside the virtual machine.  I had turned it off because I thought I wouldn’t need it.  I guess Exchange 2010 does.

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  • gpgpu vs. physX for physics simulation

    - by notabene
    Hello First theoretical question. What is better (faster)? Develop your own gpgpu techniques for physics simulation (cloth, fluids, colisions...) or to use PhysX? (If i say develop i mean implement existing algorithms like navier-strokes...) I don't care about what will take more time to develop. What will be faster for end user? As i understand that physx are accelerated through PPU units in gpu, does it mean that physical simulation can run in paralel with rastarization? Are PPUs different units than unified shader units used as vertex/geometry/pixel/gpgpu shader units? And little non-theoretical question: Is physx able to do sofisticated simulation equal to lets say Autodesk's Maya fluid solver? Are there any c++ gpu accelerated physics frameworks to try? (I am interested in both physx and gpgpu, commercial engines are ok too).

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  • Referencing environment variables *in* /etc/environment?

    - by Stefan Kendall
    I recently discovered /etc/environment, which seems a more standard way to setup simple environment variables than scripts, but I was wondering if there was a way to back-reference environment variables in the /etc/environment file. That is, I have this: JAVA_HOME="/tools/java" GRAILS_HOME="/tools/grails" GROOVY_HOME="/tools/groovy" GRADLE_HOME="/tools/gradle" PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" If I try to add $JAVA_HOME/bin to the PATH definition, however, I get $JAVA_HOME/bin, and not the interpolated variable. To remedy this, I'm creating environment.sh in profile.d to add the /bin entries to the path, but this seems sloppy and disorganized. Is there a way to backreference the environment variables in /etc/environment?

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  • Can't get TRIM test to work

    - by Matthew Marcus
    So I'm attempting to install TRIM using the walkthrough here: How to enable TRIM? But everytime I attempt to run the hdparm command, I get the following when I try to run it w/ sda: reading sector 5805056: FAILED: Input/output error and I get this when running it with sda1: /dev/sda1: Device /dev/sda1 has non-zero LBA starting offset of 2048. Please use an absolute LBA with the /dev/ entry for the full device, rather than a partition name. /dev/sda1 is probably a partition of /dev/sda (?) The absolute LBA of sector 5807104 from /dev/sda1 should be 5809152 Aborting. I'm running Natty in a VBox on Windows 7. Someone PLEASE help.. I keep getting this "consistency check" message on boot of my machine and I think it's because Ubuntu is writing to the same sectors on the VHD too much.. need to get trim working on this thing.. Thanks.

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  • simple method to install a mail server

    - by oli
    I am looking for a simple way to install a mail server on my Ubuntu server. I would like to be able to receive and send emails though a webmail (e.g. roundcube). I have a domain name. The web server already works without any problem. When I googled "simple method to install mail server on Ubuntu", I arrive on blogs with literally hundreds of steps to install a mail server: A Mailserver on Ubuntu 12.04: Postfix, Dovecot, MySQL Creating a Mail Server on Ubuntu Postfix But, for sure I will make a mistake, if I follow those tutorials, and it will be very very time consuming. Most of the steps look very easy to automate, though. I've try several install methods: sudo apt-get install dovecot-postfix sudo tasksel install mail-server But from there, I have no idea how to add email accounts, and test if it actually works. Do you know if there is an automated way to install a mail server?

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  • How do I install MATLAB R2012a?

    - by Mehdi
    I have downloaded MATLAB R2012a for Unix platform and i want to install it on my ubuntu 11.10. To install i try this command: /<matlab_installation_file_directory>/install and it says: install: missing file operand According to it's manual i must give it an input file, So i create an input file like this to install in 'Stand Alone' mode: destinationFolder=usr/local/R2012a fileInstallationKey=xxxxx-xxxxx-xxxxx-xxxxx-xxxxx agreeToLicense=yes outputFile=/tmp/mathworks_usr.log mode=interactive activationPropertiesFile=home/.../lic_standalone.dat Acctually i'm not sure in "activationPropertiesFile" field what file is required, so i supposed it requires license file. I saved this file as txt format in the same directory which installation files are. Then i tried this command: install -inputFile my_input_file.txt and it gets this error: install: invalid option -- 'i' I know there is some helps in other websites and also some questions here about this topic, but i can't figure out what's the problem, Please help me, i'm a real noob on linux . Thank you guys

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  • home page of my site is not appear in google search, when I type site:example.com

    - by Bimal Das
    I am totally confused, when I place site:example.com in google I see every page of my website in serp(search engine result page) except the home page. I don’t know why it’s happening but I check everything according to google SEO rule. But not getting success.I try to check my site through google webmaster tool everything is perfect there, Please help me to solve this. htaccess rule of my site RewriteEngine on #RewriteBase / #RewriteCond %{HTTP_REFERER} !^$ #RewriteCond %{HTTP_REFERER} !^http://(www\.)?example.ro/.*$ [NC] #RewriteCond %{HTTP_REFERER} !^http://(www\.)?exa-example.ro/.*$ [NC] #RewriteRule \.(gif|jpg|swf|flv|png)$ / [F] RewriteCond %{HTTP_HOST} ^sitename\.com$ RewriteRule ^(.*)$ http://www.sitename.com/$1 [R=301,L] RewriteRule ^privacy_policy.html$ privacy.php RewriteRule ^contact_us.html$ contact.php #RewriteCond %{HTTP_HOST} !^sitename.com$ #RewriteRule ^(.*)$ http://sitename.com/$1 [L,QSA,R=301] RewriteRule ^index\.php$ / [QSA,R=301] RewriteRule ^([A-Za-z0-9_]+)_([0-9]+).html$ articol.php?id=$2 RewriteRule ^([a-z_]+).html$ categorii.php?abbr=$1 RewriteRule ^([A-Za-z0-9+]+)$ search.php?cuvinte=$1 RewriteRule ^images/$ images [F] RewriteRule ^o_articole/$ o_articole [F]

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  • Customer Experience Online Forum

    - by Christie Flanagan
    Missed Oracle’s Customer Experience Online Forum?  Don’t worry. You can still catch the sessions at your convenience. Watch the Customer Experience Online Forum on demand to hear from Bruce Tempkin, a leading expert in customer experience, as well as other thought leaders and they delve into topics such as the ROI of customer experience and strategies for winning over customers.  Simply register to gain access to these sessions and more: The Customer Experience RevolutionCustomer experience has become the most important and defensible differentiator for your business. The customer experience is a journey that transcends all customer touchpoints and stages of the customer lifecycle. Discover where you are in the journey, identify how to begin optimizing the experience you deliver your customers, and join the Revolution.The ROI of Customer ExperienceBruce Temkin, Customer Experience Transformist & Managing Partner, Temkin GroupResearch of US and UK customers demonstrates a high correlation between a positive customer experience and loyalty. A successful customer interaction increases the willingness to buy more and to recommend your company. US companies can gain $380 million over three years by providing an optimized customer experience. This session will help companies determine the business impact that customer experience has on their specific business. Integrating Marketing and Loyalty to Deliver Great Customer ExperiencesNew devices and channels, such as mobile, social and web, are creating radical shifts in the customer buying process and the ways your company can reach and communicate with existing and potential customers. Learn how leading brands are using Oracle's marketing solutions to harness big data and better understand their customers, extend their marketing reach into social channels, and retain their high value customers through more rewarding customer experience.Where to Start Your Organization's RevolutionThe process of crafting a great customer experience starts with understanding customers and their goals. This session helps you to begin mapping a sound customer experience strategy, describing the intended experience and kinds of processes that create differentiation. The ROI of Customer Experience: A Tempkin Group Insight Report Did you know that customer experience leaders have more than a 16 percentage point advantage over customer experience laggards in consumers’ willingness to buy more, their reluctance to switch business away, and their likelihood to recommend? Did you know that even a modest increase in customer experience can translate into millions of dollars gained? Learn more about the ROI of customer experience in this free report.

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  • I cannot read second internal HD

    - by Nathan
    I reformatted my Win "C" drive and loaded Ubuntu 11.04. The second internal HD of course is not read. It is shown in 'disk utility'. I try to mount it in disk utility but I get an error message error mounting: mount exited with exit code 1: helper failed with: mount: according to mtab, /dev/sda1 is already mounted on / One problem I see is the error relates to sda1, but I am trying to mount sdb. Unfortunately, I am windows literate and ignorant of the coding for linux. Can someone help me with the code to mount my second drive (sdb) Nathan

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  • Out of disk space - /boot at 100%

    - by uvasal
    My /boot is at 100%. When I run aptitude search ~ilinux-image I'm getting loads of unused images. When I try to delete one of them (after checking which one is currently in use by doing uname -r), e.g apt-get autoremove linux-image-3.2.0-44-generic I get: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: linux-generic : Depends: linux-headers-generic (= 3.2.0.51.61) but 3.2.0.54.64 is to be installed linux-server : Depends: linux-headers-server (= 3.2.0.51.61) but 3.2.0.54.64 is to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). And running apt-get -f install throws No space left on device. I've also tried doing apt-get purge but I am getting the same thing. Output of df -h and dpkg -l linux-*.: root@hb2088:/srv/www# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 9.4G 3.0G 6.0G 34% / udev 301M 4.0K 301M 1% /dev tmpfs 124M 228K 124M 1% /run none 5.0M 0 5.0M 0% /run/lock none 309M 0 309M 0% /run/shm /dev/sda1 92M 91M 0 100% /boot root@hb2088:/srv/www# dpkg -l linux-* Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Description +++-====================================================-====================================================-======================================================================================================================== un linux-doc-3.2.0 <none> (no description available) ii linux-firmware 1.79.6 Firmware for Linux kernel drivers iU linux-generic 3.2.0.51.61 Complete Generic Linux kernel un linux-headers <none> (no description available) un linux-headers-3 <none> (no description available) un linux-headers-3.0 <none> (no description available) ii linux-headers-3.2.0-44 3.2.0-44.69 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-44-generic 3.2.0-44.69 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP ii linux-headers-3.2.0-45 3.2.0-45.70 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-45-generic 3.2.0-45.70 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP ii linux-headers-3.2.0-48 3.2.0-48.74 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-48-generic 3.2.0-48.74 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP ii linux-headers-3.2.0-51 3.2.0-51.77 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-51-generic 3.2.0-51.77 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP ii linux-headers-3.2.0-52 3.2.0-52.78 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-52-generic 3.2.0-52.78 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP iU linux-headers-3.2.0-54 3.2.0-54.82 Header files related to Linux kernel version 3.2.0 iU linux-headers-3.2.0-54-generic 3.2.0-54.82 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP iU linux-headers-generic 3.2.0.54.64 Generic Linux kernel headers iU linux-headers-server 3.2.0.54.64 Linux kernel headers on Server Equipment. un linux-image <none> (no description available) un linux-image-3.0 <none> (no description available) ii linux-image-3.2.0-44-generic 3.2.0-44.69 Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii linux-image-3.2.0-45-generic 3.2.0-45.70 Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii linux-image-3.2.0-48-generic 3.2.0-48.74 Linux kernel image for version 3.2.0 on 64 bit x86 SMP iF linux-image-3.2.0-51-generic 3.2.0-51.77 Linux kernel image for version 3.2.0 on 64 bit x86 SMP iF linux-image-3.2.0-52-generic 3.2.0-52.78 Linux kernel image for version 3.2.0 on 64 bit x86 SMP in linux-image-3.2.0-54-generic <none> (no description available) iU linux-image-generic 3.2.0.51.61 Generic Linux kernel image iU linux-image-server 3.2.0.51.61 Linux kernel image on Server Equipment. un linux-initramfs-tool <none> (no description available) un linux-kernel-headers <none> (no description available) un linux-kernel-log-daemon <none> (no description available) ii linux-libc-dev 3.2.0-52.78 Linux Kernel Headers for development un linux-restricted-common <none> (no description available) iU linux-server 3.2.0.51.61 Complete Linux kernel on Server Equipment. un linux-source-3.2.0 <none> (no description available) un linux-tools <none> (no description available) Output of du -sh /boot/*: root@hb2088:~# du -sh /boot/* 781K /boot/abi-3.2.0-44-generic 781K /boot/abi-3.2.0-45-generic 781K /boot/abi-3.2.0-48-generic 781K /boot/abi-3.2.0-51-generic 781K /boot/abi-3.2.0-52-generic 139K /boot/config-3.2.0-44-generic 139K /boot/config-3.2.0-45-generic 139K /boot/config-3.2.0-48-generic 139K /boot/config-3.2.0-51-generic 139K /boot/config-3.2.0-52-generic 1.6M /boot/grub 14M /boot/initrd.img-3.2.0-44-generic 14M /boot/initrd.img-3.2.0-45-generic 14M /boot/initrd.img-3.2.0-48-generic 12K /boot/lost+found 174K /boot/memtest86+.bin 176K /boot/memtest86+_multiboot.bin 2.8M /boot/System.map-3.2.0-44-generic 2.8M /boot/System.map-3.2.0-45-generic 2.8M /boot/System.map-3.2.0-48-generic 2.8M /boot/System.map-3.2.0-51-generic 2.8M /boot/System.map-3.2.0-52-generic 4.8M /boot/vmlinuz-3.2.0-44-generic 4.8M /boot/vmlinuz-3.2.0-45-generic 4.8M /boot/vmlinuz-3.2.0-48-generic 4.8M /boot/vmlinuz-3.2.0-51-generic 4.8M /boot/vmlinuz-3.2.0-52-generic

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  • Can't reboot netbook with any of the reboot parameters

    - by Delan Azabani
    I have a Sony VPCW218AG netbook that I've dual-booted with Ubuntu 10.10. Unlike the preinstalled Windows 7, Ubuntu will not reboot on this computer. Rebooting from Gnome, using the reboot command and SysRq+REISUB all don't work; they end hanging with a blank screen. I have read that Atom netbooks don't have a keyboard controller and therefore the default reboot method, kbd, won't work. I have actually tried all ten reboot= parameters listed here; none of them work. I have also tried disabling ACPI with noacpi acpi=off for each one; that didn't help either. Are there any other things I can try to fix the rebooting problem?

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  • Microsoft Team Foundation Server 2010 Service Pack 1

    - by javarg
    Last week Microsoft has released the first Service Pack for Team Foundation Server. Several issues have been fixed and included in this patch. Check out the list of fixes here. Cool stuff has been shipped with this new released, such as the expected Project Service Integration. PS: note that these annoying bugs has been fixed: Team Explorer: When you use a Visual Studio 2005 or a Visual Studio 2008 client, you encounter a red "X" on the reporting node of the team explorer. Source Control: You receive the error "System.IO.IOException: Unable to read data from the transport connection: The connection was closed." when you try to download a source

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  • wpa_supplicant ioctl[SIOCSIWENCODEEXT]: Invalid argument

    - by RobinJ
    I just installed Ubuntu Server on a spare computer with a broken graphic card, and I needed to setup my wifi. I thought No problem, I've done it before from the command line, in Arch Linux., only the steps I had to take in Arch Linux didn't work in Ubuntu Server (that's odd, wasn't Ubuntu supposed to be so much more user-friendly? :/). This is what I'd normally do: ip link set wlan0 up wpa_passphrase <ESSID> <WPA KEY> > /etc/wpa_supplicant.conf wpa_supplicant -B -Dwext -i wlan0 -c /etc/wpa_supplicant.conf dhcpcd wlan0 Only at the wpa_supplicant I get some strane message: ioctl[SIOCSIWENCODEEXT]: Invalid argument ioctl[SIOCSIWENCODEEXT]: Invalid argument And if I try to run dhcpcd then (which I manually installed, as it didn't come preinstalled with Ubuntu Server), it times out. Help on how to do it would be much appreciated. My wireless driver is iwl3945.

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  • Screen brightness control not working on Lenovo T530

    - by Matt
    My brightness control doesn't work with a fresh install of 12.10 (brand new laptop). It is set to the brightest setting when I boot up and when I try to change it, I see the notification bar come up but the brightness doesn't actually change. I've tried all the solutions I could find around the Internet but none of them work. Things I have tried include: Editing /sys/class/backlight/acpi_video0/brightness In /usr/share/X11/xorg.conf.d/10-brightness-control.conf: Option "RegistryDwords" "EnableBrightnessControl=1" In /etc/default/grub: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor" There is no xorg.conf file in 12.10 that I have found, so the solutions that suggest editing that file don't do me a whole lot of good. I am currently using the Nouveau driver, but switching to the Nvidia proprietary drivers made no difference. Any other ideas? When is this bug going to be fixed? With all the reports I've come across I would think it would get a lot of attention. Thanks.

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  • Comparing a saved movement with other movement with Kinect

    - by Ewerton
    I need to develop an application where a user (physiotherapist) will perform a movement in front of the Kinect, I'll write the data movement in the database and then the patient will try to imitate this motion. The system will calculate the similarity between the movement recorded and executed. My first idea is, during recording (each 5 second, by example), to store the position (x, y, z) of the points and then compare them in the execution time(by patient). I know that this approach is too simple, because I imagine that in people of different sizes the skeleton is recognized differently, so the comparison is not reliable. My question is about the best way to compare a saved motion with a movement executed (on the fly). PS: Sorry by my English.

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  • Clear Complete Instructions to Dual-Boot 12.04 on OSX Lion

    - by BCZ
    Honestly, google-surfing this question leads to so many half-answers and multi-part communications that it is both scary and frustrating to try to navigate them. The question here is simple: What are the clear and complete step-by-step instructions that you used to dual-boot 12.04 on your OSX Lion (entrapped) Apple computer. Did you use rEFIt, rEFIind, a special .iso of 12.04? What? Obviously, there is a preference for safer, easier, and more reversible methods. I can probably assure that the best answer will get plenty of views.

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  • aspnet_regiis -lk is not listing the site I need

    - by Luke Duddridge
    I am trying to release a site to run under framework 4 on a server that also hosts framework 2 sites. By default the App has defaulted to framework 2, but when I try to change it's framework to 4 I get a message saying that the following action will cause the iis to reset. The problem I have is there are serveral active sites that I do not want to interupt with a restart. The message goes on to say you can avoid restarting by running the following: aspnet_regiis -norestart -s [IIS Virtual Path] I have been attempting to find the site virtual path but when I run aspnet_regiis -lk the site I am after does not appear to be listed. My first thoughts were that it has something to do with the app pool?, but I'm sure I saw sites that are inactive listed, and after creating a basic site to get it to run under framework 2, the site still did not appear in the -lk list. Can anyone tell me if there is an alternative location to the -lk that I can find the specific information realating to the IIS Virtual Path?

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  • How to copy a folder from /home/kevin to /opt

    - by lambda23
    I have a new computer installed with Ubuntu 12.04. Then I want to install wireless driver named compat-wireless-3.5-3. Before that, the driver folder to /home/kevin. I want to install it on /opt directory. Before install the driver, i want to copy the driver folder from /home/kevin to /opt. I try to use ordinary copy (Right Click Copy Paste), but the paste is blured. After that, i tried using this on terminal: sudo cp /home/kevin/compat-wireless-3.5-3 /opt But i get this command: cp: omitting directory `home/kevin/compat-wireless-3.5-3' What does the command mean? I can't copy the driver until now.

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  • Not able to see databases in symlinked folder

    - by Josh Smith
    I created a folder on my Dropbox and then symlinked it to both of my computers that I use for development. The folder is working correctly and I can see all the files in it from both computers. The problem arises when I try and access the databases from my MacBook Air. When I open up MAMP Pro and start the web service I can't connect to my development sites, at least from one of my computers. My questions are: Is this even a good idea to symlink the db folder for MAMP? If it is not then is the a smart way to develop locally on two machines? Can I prompt phpMyAdmin to reindex the db folder so it can start accessing the databases? I have tried shutting down both versions of the server software. I have restarted both machines. I am at a loss right now. -Josh

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  • Managed Languages vs Compiled Language difference?

    - by l46kok
    I get confused when people try to make a distinction between compiled languages and managed languages. From experience, I understand that most consider compiled languages to be C,C++ while managed languages are Java,C# (There are obviously more, but these are just few examples). But what exactly is the core difference between the two types of languages? My understanding is that any program, regardless of what language you use is essentially "compiled" into a low-level machine code which is then interpreted, so does that kinda make managed languages a subset of compiled languages (That is, all managed languages are compiled languages but not the other way around)?

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  • Nginx Browser Caching using HTTP Headers outside server/location block

    - by Danny O'Sullivan
    I am having difficulty setting the HTTP expires headers for Nginx outside of specific server (and then location) blocks. What I want is to something like the following: location ~* \.(png|jpg|jpeg|gif|ico)$ { expires 1y; } But not have to repeat it in every single server block, because I am hosting a large number of sites. I can put it in every server block, but it's not very DRY. If I try to put that into an HTTP block or outside of all other blocks, I get "location directive is not allowed here." It seems I have to put it into a server block, and I have a different server block for every virtual host. Any help/clarification would be appreciated.

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  • What I like about WIF&rsquo;s Claims-based Authorization

    - by Your DisplayName here!
    In “traditional” .NET with its IPrincipal interface and IsInRole method, developers were encouraged to write code like this: public void AddCustomer(Customer customer) {     if (Thread.CurrentPrincipal.IsInRole("Sales"))     {         // add customer     } } In code reviews I’ve seen tons of code like this. What I don’t like about this is, that two concerns in your application get tightly coupled: business and security logic. But what happens when the security requirements change – and they will (e.g. members of the sales role and some other people from different roles need to create customers)? Well – since your security logic is sprinkled across your project you need to change the security checks in all relevant places (and make sure you don’t forget one) and you need to re-test, re-stage and re-deploy the complete app. This is clearly not what we want. WIF’s claims-based authorization encourages developers to separate business code and authorization policy evaluation. This is a good thing. So the same security check with WIF’s out-of-the box APIs would look like this: public void AddCustomer(Customer customer) {     try     {         ClaimsPrincipalPermission.CheckAccess("Customer", "Add");           // add customer     }     catch (SecurityException ex)     {         // access denied     } } You notice the fundamental difference? The security check only describes what the code is doing (represented by a resource/action pair) – and does not state who is allowed to invoke the code. As I mentioned earlier – the who is most probably changing over time – the what most probably not. The call to ClaimsPrincipalPermission hands off to another class called the ClaimsAuthorizationManager. This class handles the evaluation of your security policy and is ideally in a separate assembly to allow updating the security logic independently from the application logic (and vice versa). The claims authorization manager features a method called CheckAccess that retrieves three values (wrapped inside an AuthorizationContext instance) – action (“add”), resource (“customer”) and the principal (including its claims) in question. CheckAccess then evaluates those three values and returns true/false. I really like the separation of concerns part here. Unfortunately there is not much support from Microsoft beyond that point. And without further tooling and abstractions the CheckAccess method quickly becomes *very* complex. But still I think that is the way to go. In the next post I will tell you what I don’t like about it (and how to fix it).

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  • Changing Focus on my Blog

    - by D'Arcy Lussier
    I try to limit these types of blog posts – the ones where I communicate some change as if I have a loyal subscriber base that will be somehow affected. Still, I think its of worth if for nothing else than to document for myself an acknowledgement that my career is evolving. For the last who knows how long, I’ve had this as my banner: It’s funny how technology focuses change over time. 3.5 – 4 years ago I was wanting to immerse myself in BizTalk. Then I shifted, focussing on Silverlight. I even started a short-lived Silverlight user group here in Winnipeg that had, IMO, one of the *best* UG logos ever (do a Google search for the old school Winnipeg Jets logo if you don’t catch the reference)… And even how I identified myself – as a Developer – isn’t really accurate anymore as I’ve shifted more into an architect/analyst role at Online Business Systems as well as getting much more involved in business development. So I’m switching the focus of this blog a bit. Nothing too great, but you’ll find my posts aren’t necessarily tied to a technology or platform. Instead I’ll be focussing on current passions and interests. Solution Architecture Before a line of code is written, a solution is envisioned. The process of performing solution analysis and architecture is an intriguing process that encompasses negotiation and interpersonal skills as much as technical knowledge. Business & Entrepreneurship Creating things, building things, and working with others – business is fascinating and exciting! Entrepreneurship, and intrapreneurship, are growing trends that I’ve been exploring over the last few years through my conference (www.prairiedevcon.com) and within Online. Microsoft At Online one of my roles is “Microsoft Practice Lead” and my entire career has been built around the Microsoft stack of technologies. That focus won’t change here on my blog, and there’s tonnes of exciting new products and technologies coming out of Redmond. Adoption This is a very personal subject that’s extremely close to my heart. I’m not talking about technology adoption, I’m talking about human adoption. Almost three years ago we adopted our first daughter, Sadie, and two years ago we adopted our second daughter, Skylar; an amazing new chapter in my life as I became a “parent”. Adoption is very much misunderstood, and many people have questions about it. Hopefully I can shed some light into our experiences and provide some guidance for those that are looking into it. So come along with me as I start chronicling the next phase of my career and life.

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